Question

Solve the ple by eliminatoin metod by 2x-y= 5and x+3y=6

Answer 1

Answer:

Step-by-step explanation:

Let 2x - y = 5-----eq ( 1 ) and

x + 3y = 6------eq ( 2 )

Now multiply eqeq ( 1 ) by 3 we, get

3 × [ 2x - y = 5 ] ⇒ 6x - 3y = 15--------eq ( 3 ) ( say).

Now adding eq ( 2 ) + eq ( 3 ) , we get

x + 3y + 6x - 3y = 6 + 15

⇒7x = 21

⇒ x = 21/7

⇒ x = 3.

Now substituting " x = 3 " in eq ( 1 ) , we get

2 ( 3 ) - y = 5

⇒ 6 - y = 5

⇒ y = 6 - 5

⇒ y = 1.

∴ The values of x and y are 3 and 1.